No, you're generalising. I don't personally go for the 'T&A' thing; for me it's mainly about facial beauty, and also a bright personality.

I also don't find Megan Fox attractive, I guess because she seems really boring, and that is reflected in her expression.

Also I think the whole 'symmetry' thing is a load of bollocks. Are you really saying you notice how symmetrical somebody's face is? When you see an unattractive person, do they have unsymmetrical faces generally? No, the only thing that really matters is how close their general features are to those we consider attractive. A handsome guy can have a crooked nose and would be orders of magnitude more unsymmetrical than a plain guy with symmetrical features.